n = int(input())

if n >= 1800:
  print("1")
elif n >= 1600:
  print("2")
elif n >= 1400:
  print("3")
elif n >= 1200:
  print("4")
elif n >= 1000:
  print("5")
elif n >= 800:
  print("6")
elif n >= 600:
  print("7")
elif n >= 400:
  print("8") n = int(input()) n int(input()) int input() input if n >= 1800:
  print("1")
elif n >= 1600:
  print("2")
elif n >= 1400:
  print("3")
elif n >= 1200:
  print("4")
elif n >= 1000:
  print("5")
elif n >= 800:
  print("6")
elif n >= 600:
  print("7")
elif n >= 400:
  print("8") n >= 1800 n 1800 print("1") print "1" elif n >= 1600:
  print("2") n >= 1600 n 1600 print("2") print "2" elif n >= 1400:
  print("3") n >= 1400 n 1400 print("3") print "3" elif n >= 1200:
  print("4") n >= 1200 n 1200 print("4") print "4" elif n >= 1000:
  print("5") n >= 1000 n 1000 print("5") print "5" elif n >= 800:
  print("6") n >= 800 n 800 print("6") print "6" elif n >= 600:
  print("7") n >= 600 n 600 print("7") print "7" elif n >= 400:
  print("8") n >= 400 n 400 print("8") print "8" n = int(input()) int(input()) n
n = int(input())

if n >= 1800:
  print("1")
elif n >= 1600:
  print("2")
elif n >= 1400:
  print("3")
elif n >= 1200:
  print("4")
elif n >= 1000:
  print("5")
elif n >= 800:
  print("6")
elif n >= 600:
  print("7")
elif n >= 400:
  print("8")